Nigeria schoolgirl abductions: Female suicide bomber claims she was one of the kidnapped students

The mother of a missing Chibok girl reacts during a march, with other women calling for their daughters to be brought back home, to the presidential villa in Abuja, NigeriaREUTERS/AkintundeAkinleye

Parents of some of the schoolgirls abducted from Chibok in Nigeria by BokoHaram militants are travelling to neighbouring Cameroon after reports emerged that young girls captured wearing suicide belts had claimed to be two of the missing children. However there is uncertainty about the reports as the girls have been described as being as young as 10, too young to be from Chibok.

A spokesman for Nigerian President MuhammaduBuhari said a delegation, including some parents of the missing girls, would now go to Cameroon. "As soon as we establish permission to allow access, then we'll put them on whatever flight is available," said presidential spokesman GarbaShehu.

The delegation will "verify whether (she)... is one of the missing schoolgirls abducted in Chibok," Shehu went on. "Some of the reports I got indicated the two girls are not even 15, perhaps about 10 years old each [but] we are not ruling out anything at this stage." However, he cautioned: "One of the two is also believed to be heavily drugged and therefore not in full control of her senses."

The kidnap of 276 girls from a school in Chibok caused international outcry and the launch of the #BringBackOurGirls movement. 50 escaped soon afterwards but BokoHaram – which has killed tens of thousands in its bid to establish a Sharia state – paraded the rest on video and claimed they would be sold as sex slaves. The group has often used young children as walking bombs, though the term "suicide bomber" is misleading as most are coerced or tricked into carrying explosives.